html{
    overflow-x: hidden;
}
html,body,div,span,p,table,thead,tbody,tr,td,a{
    padding: 0;
    margin: 0;
    color: #000;
    text-decoration: none;
    z-index: 1;
}
.bgc{
    background-image: url('https://gimg2.baidu.com/image_search/src=http%3A%2F%2Fn.sinaimg.cn%2Fsinacn%2Fw1000h669%2F20180310%2Fd879-fxpwyhw6973792.jpg&refer=http%3A%2F%2Fn.sinaimg.cn&app=2002&size=f9999,10000&q=a80&n=0&g=0n&fmt=jpeg?sec=1614932253&t=232fb9691f0df36049cccaa8ee882731');
    background-size: cover;
    background-repeat: no-repeat;
    filter:blur(30px);
    width: 100%;
    height: 100%;
    position: absolute;
    z-index: 0;
}